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26 October, 15:50

What is the molar mass of each compound?

a. Li2CO3 (lithium carbonate)

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Answers (1)
  1. 26 October, 17:00
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    73.89 g/mol

    Explanation:

    Molar mass is the mass contained by one mole of an element or a compound. The molar mass of an element is equivalent to its atomic mass, while the molar mass of a compound is equivalent to the relative formula mass of the compound. Relative formula mass of a compound is calculated by getting the sum of the relative atomic masses of all the elements making the compound.

    In this case,

    Our compound is LI₂CO₃, it is made of 2 Lithium atoms, 1 carbon atom and 3 oxygen atoms.

    Atomic mass of O = 16.0

    Atomic mass of Li = 6.94

    Atomic mass of C = 12.01

    Thus, RFM of LI₂CO₃ = (2 * 6.94) + 12.01 + (3 * 16.0)

    = 73.89 g/mol

    Thus, the molar mass of LI₂CO₃ is 73.89 g/mol
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